It's probably unclear from the title so I'm gonna explain. When I type Java code in Eclipse, I have it setup so I get my suggestions automatically, without doing ctrl+space. When typing my code I'll do something like:

DecimalFormat df = new DecimalFormat("#.##");

So, if I were to do this with the suggestions, the space-key automatically commits to the suggestion, like so:

DecimalFormat dFormat = new DecimalFormat("#.##");

I don't want to have to backspace to write it as df. How can I make it so the space key doesn't commit to the dFormat and just does "space", like I want it to?